New 11-Methoxymethylgermacranolides from the Whole Plant of Carpesium divaricatum .
Tao ZhangHaixin ZhangChunyu LinLu FuZhong-Mei ZouPublished in: Molecules (Basel, Switzerland) (2022)
Eight new 11-methoxymethylgermacranolides ( 1 - 8 ) were isolated from the ethanol extract of the whole plant of Carpesium divaricatum . The planar structures and relative configurations of the new compounds were determined by detailed spectroscopic analysis. The absolute configuration of 1 was established by electronic circular dichroism (ECD) spectrum and X-ray crystallographic analysis, and the stereochemistry of the new compounds 2 - 8 were determined by similar ECD data with 1 . The absolute configurations of 5 and 7 were further confirmed by using quantum chemical electronic circular dichroism (ECD) calculations. Compound 4 exhibited weak cytotoxicity against MCF-7 cells. Compound 8 could potently decrease PGE2 productions in LPS-induced RAW 264.7 cells.
Keyphrases
- induced apoptosis
- lps induced
- cell cycle arrest
- inflammatory response
- high resolution
- oxidative stress
- cell death
- endoplasmic reticulum stress
- magnetic resonance imaging
- electronic health record
- molecular docking
- magnetic resonance
- computed tomography
- molecular dynamics simulations
- cell proliferation
- monte carlo
- cell wall
- energy transfer